Deluxe. Before I had a Maximus II Formula. Very happy with Asus and I'm pretty curious about the Rampage III Extreme :) I'm satisfied with EVGA but Asus was my first love before. Not pretty sure I'll go on X58, it will depend on Fermi results, and final choice versus Xfire with 5x70 or Fermi something. If it's really useful to have 2x x16 PCIe lanes, I'll change my mobo and this Rampage III... mmmm miam. Anyway, you're not the only one with buzzing mobo, some EVGA owner also report that kind of problem, but only with Cstate enabled. Probably something to do with vrm's I suppose. Or with the PSU, I'^m not realy a Seasonic fan and people with the buzzing mobo by EVGA have Seasonic psu...
Good luck hope you'll not have some problem again. ;)
